Can-soldering machine



(No Model.) 2 Sheets-Sheet'l.

W. MBMlvIART.`

GAN SOLDERING MACHINE;

wrTNEssEs; V INVENTOR:

ATTORNEY.

(No Model.)

y I A 2 Sheets-Sheet 2. W. M. EMMART. GAN SOLDERINGMAGHINE.

Patented May 8, 1888.

INVENTOR:

6pm/f@ ATTORN EY.

UNITED STATES- PATENT Unsinn.

WILLIAM M. EMMART, OF BALTIMORE, MARYLAND.

CAN-SOLDERING MACHINE.

SPECIFICATION forming part of Letters Patent No. 382A63, dated May 8,1888- Anplication fledMnrchl5,1888. SerialNo.2G7,221. (No model.)

'in Oan-Soldering Machines', of which the fol- A lowing is aspeciication.

My invention relates to certain improvements in machines for solderingthe heads of cans. It is more particularly an improvement on thecontinuously-movable endlessconveyer machine for which Letters Patent ofthe United gesitzes No. 362,150 were granted me May 3, 'Ilhe inventionis illustrated in the accompanying drawings, in which Figure 1 is a sideelevation of the machine. Fig. 2 is a top view of the machine. The toppart of the center standard, at the left-hand end, is broken away toshow the sprocketwheel and gear-wheels. Fig. 3 is a verticalcross-section oi' the parts of the machine on the line 3 3 of Fig. 2.Fig. 4 shows a side view of two sections of the endless conveyer. Fig. 5is a detail view of the sprocket-wheel and the cogged drivechain, bywhich a positive rotary motion is imparted to the canseats. Fig. 6 is atop view of a can-seat. Fig. 7 shows two views of the can-shield plaie.Fig. 8 is a section View of the can seat or' holder and the shield forspindle, said parts being integral or in one casting;

The letter F designates the frame or stand of the machine; B B',standards each of which supports two upper parallel guide-bars, b, andalower grooved guide-bar, b', and alsoa chainguide, G, located betweenthe said upper and lower guide-bars. The gnidebars b and b andchain-guide G are placed to form two sets, one extending along eachlongitudinal side of the machine. (Shown in the top view of Fig. 2.) Theendless conveyer A is made in sections, which are jointed together chainfashion. The vertical pivot-bolts a', which unite the conveyer-sections,travel along the space between the said guide-bars b, substantially asset forth in my Letters Patent above referred to.

An important difference between this machine and that shown in thepatent named consists in the position of the camseats a6. In the saidpatent the can-seat is on a revoluble stem, which has bearing only inthe bottom piece (or link) of a jointed section, and thereby the can Mmust take position below the top piece, or between the top and bottompieces (or links) which compose the conveyer. In this machine thecan-seat ai is on a revoluble spindle, d, which has bearing a2 in boththe top and bottom links of the section, (see Figs. 3 and 4,) andthereby the can M has position above or on top of the conveyer, which inpractice is found to be much more convenient and satisfactory. Thisconstruction of jointed section, having top and bottom pieces, spindled, having bearings in both, and canseat c, gives sta' bility and greatersteadiness of rotary motion of the canseat. No holder or disk to pressou top of the can is here contemplated.

The lower guide-bar, Z1', has a top groove, b2, (see Figs. 3 and 4,) andeach of the bottom pieces or links, A, ofthe conveyer has a centralboss, b3, on its lower side, which sets in the said groove b2 of thelower bar. The lower end of the revoluble spindle d is stepped in theboss b3. The entire weight of the conveyer and can-seats thus rests uponthe said lower grooved guide-bar, and when theinachine is in motion thebosses b3 slide along this grooved bar. Y

At each end ofthe machine is a vertical shaft, c', and each shaftcarries two polygonal notched wheels, C, one of which engages with thetop links and the other with the bottom links or jointed sections of theendless conveyer A. A horizontal shaft, d', is below the conveyer, andis provided with a drive-pulley, D, aud at each end with a bevel-pinion,d2, which latter gears with a bevel-pinion, c3, on each of the saidvertical shafts c. These driving parts are alike at both ends ofthemachine.

A feature of my improvement is here shown in the cogged drive-chain L,chainguide G, and the pinion k, located on the spindle d, between itstwo bearings, a2. Each can-seat spindle d is provided, intermediate ofits bearings in the top and bottom link, with a pinion, k, and a specialchain, L, comprises links, each having cog-teeth Z ou one side and asocket, n, on the opposite side. The cog-teeth Z engage with the saidpinions k, and the sockets n re ceive the teeth of a sprocket-wheel, o,by which latter motion is imparted to the chain. As

already stated, there are two chainguides G, one extending along eachlongitudinal side oi IOO the machine. Each chain-guide occupies vahorizontal plane intermediate of or between the upper and lowerguide-bars, b b. The chain L slides along these guides, and is sustainedthereby. Each guide has a Vertical back, p, which the socket side of thelinks rest against, and in moving along the longitudinal side of themachine the links are kept in position, where their cog-teeth Zwillremain engaged with the said pinions k. As the pinions and chain L arebetween the upper and lowerV guide-bars and also between the twospindlebearings a, the pressure of the chain on the spindles causes nobad effects, as in those cases where the pinion is on the lower end ofthe spindle and the latter has but one bearing. At the ends ofthemachine the chain L leaves the guides G and passes around pulleys orwheels e. The sprocketwheel o is on a vertical shaft, e', which has agear-wheel, e2, and the shaft c also has a gear-wheel, c, which gearswith it. The movement of the chain G is in a circuit in a directionopposite that in which the conveyer A moves.

The can-seat consists of cross-bars a3, radiating from a hub, and anopen circular or cylindric shield, a, attached to the four eross-barsand depending downward and surrounding the upper end of the spindle d,to which the can-seat hub is attached, and a ring, a, at the ends of thecross-bars and larger than the circular shield a6. The shield a is aseat for the can and protects the upper end of the spindle d from theflame of the burner, and the ring a,it surrounds the end of the can. Theburners H are attached to supplypipes H. rlwo pipes H are placedparallel, and both are used in connection with the can-seats at oneheatingpoint, as will be seen in Figs. 2 and 3. The can-seats passbetween two sets of burners. From iive to twelve burners may be used ineach set. The flame ofthe burners plays upward against the lowerhead-seam of the can. The burners are so placed that the ilame spreads,and part of it takes effect on the outside of the open cylindric shielda,which thus protects the spindle d from heat and prevents theoil-lubricant at its upper bearing, a2, from being burned. The flamereaches the end seam ot' the can between the seat or shield as and theouter ring, a4.

The can-shield plate a is constructed and operates the same as thatdescribed in my former patent.

It will be seen that the machine here shown is designed to solder canswhile they pass along each of the two longitudinal sides. On one side ofthe machine the cans to be soldered are placed on the can-seats at oneend at the point the cooling of the cans, an air-blower is provided.Gold air may be supplied from any suitable air-forcing device anddelivered into the pipe O, from whence it passesto the plpes O', whichare parallel in sets of two, like the burner-supply pipes. Nozzles x areon the air-pipes O', and deliverjets of cold air onto* the hot seamofthe cans. By the time the cans have reached the other end of themachine, at the point P, they will have become cool enough to remove, orto be reversed end for end, and placed on the can-seats at the otherside of the machine at the point Q. Another piece of solder beingdeposited within the can, the latter will go'through the same process ofheating soldering, and cooling until it reaches the end of the machineat the point R, where it is finally removed.

The vertical shaft c at each end ofthe machine, in addition to thepolygonal wheel which engages with the links or sections of theconveyer, has at its top a can-guiding wheel v which consists of a hub,s, provided with arms, each having a segment-shaped can-guide, t. Thecans M, when properly on the seats a, will be centered by the guides t.The guides ttherefore facilitate placing the cans on the seats evenly.

As shown in the drawings, the machine stands vertically, and thecontinuously-movable endless conveyer moves in a horizontalv plane. Thisposition of the machine and this plane for the movement of the conveyerare not material. It is obvious that these may be dierent from what isshown in the drawings without departing from my invention. For instance,the machine, instead of standing vertically, may be inclined to oneside, so that the conveyer will move in an inclined plane, thereby tohave the cans slightly inclined while rotating, with the view offacilitating the flow ofthe melted solder into the end seam of the can.

Having described my invention, I claim and desire to secure by LettersPatent of the United States-- 1. The combination, in an endless conveyerfor a can-soldering machine, of the jointed sections having top andbottom links, a revoluble spindle, d, which has bearing in both the topand bottom links, and a can-seat, a, on the upper end of the spindle andabove the said top link.

2. The combination, inan endless conveyer for a can-soldering machine,of the `jointed sections having top and bottom links, the said bottomlinks having on their lower sides a central boss, b3, a revolublespindle, d, which has its lower end stepped in said boss, a canseat onthe upper end of the spindle, two up. per guide-bars, b, and a lowerguide-bar havingv a groove in its top to receive the said bosses.

3. The combination, in a can-soldering machine, of the endlessl conveyercomposed of jointed sections, each having a top and bottom link,arevoluble can-seat spindle which has bearing in both the said top andbottom links and is provided intermediate of its said IOO 5 chine, ofthe endless conveyer composed of jointed sections, each having a top andbottom link, a revoluble can-seat spindle which has bearing in both thesaid top and bottom links and is provided intermediate of its said robearings with a pinion, 7c, an endless chain,

each link of which has on one side cog-teeth` Zand on the opposite sidea socket, n, and a sproeket-wheel, o, as shown and described.

5. The combination, in a can-soldering ma- 15 chine, of the endlessconveyer composed of jointed sections, each having a top and bottomlink, a revoluble can-seat spindle which has bearing in both the saidtop and bottom links and is provided intermediate of its said 2obearings with a pinion, k, upper guide-bars, b,

a lower guide-bar, b', a chainguide. located between the said upper andlower guidebars, and an endless chain movable along said chainguide andengaged with the pinions, as shown and described.

6. The combination, in a can-soldering machine, of a conveyer havingrevoluble spindles d, and a can-seat having two crossed bars, a3,radiating from a hub which is attached to the said spindle, and an opencylindrie shield, ci, attached to said crossed bars and depending fromthem and surrounding the upper end of the spindle, which latter isthereby protected from the flame, as shown and described.

In testimony whereof I affix my signature in` the presence of twowitnesses.

. WILLIAM M. EMMART.

Witnesses:

JNO. T. MADDOX,

JOHN E. MORRIS.

